For years I've been using io6's (superb btw) and various 510 dripping Atty's to test my mixes. The last in my stash has died and I cannot seem to locate them here in Australia. It would seem that people are actually using re-buildables or tanks in some form which is absurd! Having to clean out a previous flavour and or re wick is not productive at all. JuiceWhore use to carry the Joyetech 510 atty's but it seems no more. Does anyone know who carries these locally? Really don't want to order from the US..